[1] Univ Michigan, Inst Healthcare Policy & Innovat, Ann Arbor, MI USA
[2] Univ Michigan, Dept Emergency Med, Ann Arbor, MI USA
[3] Icahn Sch Med Mt Sinai, Dept Emergency Med, New York, NY USA
[4] Univ Washington, Dept Emergency Med, Seattle, WA USA
[5] Univ Michigan, Sch Informat, Ann Arbor, MI USA
[6] Univ Michigan, Dept Internal Med, Div Infect Dis, Ann Arbor, MI USA
[7] Univ Michigan, Child Hlth Evaluat & Res Ctr, Ann Arbor, MI USA
[8] VA Ann Arbor Healthcare Syst, Ctr Clin Management Res, Ann Arbor, MI USA
[9] Univ Michigan, Dept Internal Med, Ann Arbor, MI USA
[10] Univ Michigan, Dept Hlth Management & Policy, Ann Arbor, MI USA
[11] Univ Michigan, Dept Family Med, Ann Arbor, MI USA
[12] 1705 NE Pacific St,Box 357235, Seattle, WA 98195 USA